CN100506177C - System for controlling ultrasonic clamping and cutting instruments - Google Patents

System for controlling ultrasonic clamping and cutting instruments Download PDF

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Publication number
CN100506177C
CN100506177C CN 200610073358 CN200610073358A CN100506177C CN 100506177 C CN100506177 C CN 100506177C CN 200610073358 CN200610073358 CN 200610073358 CN 200610073358 A CN200610073358 A CN 200610073358A CN 100506177 C CN100506177 C CN 100506177C
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instrument
ultrasonic
power
generator
ultrasonic surgical
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CN 200610073358
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Chinese (zh)
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CN1839768A (en
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艾坦·T·威纳
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伊西康内外科公司
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32Surgical cutting instruments
    • A61B17/320068Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B17/320092Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00017Electrical control of surgical instruments
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00017Electrical control of surgical instruments
    • A61B2017/00022Sensing or detecting at the treatment site
    • A61B2017/00026Conductivity or impedance, e.g. of tissue
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00017Electrical control of surgical instruments
    • A61B2017/00022Sensing or detecting at the treatment site
    • A61B2017/00106Sensing or detecting at the treatment site ultrasonic
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00017Electrical control of surgical instruments
    • A61B2017/00022Sensing or detecting at the treatment site
    • A61B2017/00106Sensing or detecting at the treatment site ultrasonic
    • A61B2017/0011Sensing or detecting at the treatment site ultrasonic piezo-electric
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32Surgical cutting instruments
    • A61B17/320068Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B17/320092Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw
    • A61B2017/320094Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw additional movable means performing clamping operation
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32Surgical cutting instruments
    • A61B17/320068Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B17/320092Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw
    • A61B2017/320095Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw with sealing or cauterizing means

Abstract

一种用于与超声外科器械一起使用的控制系统包括向超声外科器械供应电能的发生器,由该发生器供应的电能受到如此的控制,即,一旦达到预定的压力阈值,就将由器械施加的功率保持恒定。 A control system for use with an ultrasonic surgical instrument comprising a generator supplying power to the ultrasonic surgical instrument for the electrical energy supplied by the generator being controlled such that, once a predetermined pressure threshold is reached, the instrument will be applied power remains constant. 该控制系统如此操作,即:分配超声器械操作时的额定功率并调节施加给超声外科器械的电流和电压,以便将由超声外科器械施加的功率保持基本上处于额定功率。 The operation of such a control system, namely: rated power allocation ultrasonic instrument operation and adjustment of current and voltage applied to an ultrasonic surgical instrument, substantially in order to maintain the rated power by the ultrasonic power applied to the surgical instrument.

Description

用于控制超声夹钳和切割器械的系统 A system for controlling an ultrasonic clamp and cutting instrument

技术领域 FIELD

本发明涉及超声手术夹钳和切割器械。 The present invention relates to ultrasonic surgical clamp and cutting instrument. 更具体地说,本发明涉及一种用于超声手术夹钳和切割器械的改进的功率限制机构。 More particularly, the present invention relates to an improved ultrasonic surgical instrument clamp and cutting mechanism for power limitation.

背景技术 Background technique

超声器械用于很多医疗情况的安全和有效的处理。 Ultrasonic instruments for the safe and effective treatment of many medical conditions. 超声器械是有利的,因为它们通过使用以机械振动的形式以超声频率传递到手术端部执行器的功率而被用来切割和凝固器官组织。 Ultrasonic instruments are advantageous because they are the power delivered to the surgical end effector by used in the form of mechanical vibrations at ultrasonic frequency to be used for cutting and coagulating tissue organs.

超生波振动当以适当的功率水平传递到器官组织上并使用适当 When the ultrasound waves vibrating at an appropriate power level delivered to the tissues and organs using the appropriate

的端部执行器时,可被用来切割和/或解剖组织。 When the end effector, can be used to cut and / or dissect tissue. 利用实芯(solid core)技术的超声器械是特别有利的,因为超声能量可从超声换能器通过波导传递到手术端部执行器。 Using a solid core (solid core) ultrasonic instruments technique is particularly advantageous, since the ultrasonic energy from the ultrasound transducer may be transmitted to the surgical end effector through the waveguide. 这种器械特别适于在微创手术中使用,例如内窥镜或腹腔镜手术,其中端部执行器穿过套管针以接近手术部位。 Such instruments are particularly suitable for use in minimally invasive surgery, such as endoscopic or laparoscopic procedures, wherein the end effector through a trocar to close the surgical site.

在手术端部执行器中,例如通过电激励的换能器来诱发超声振动,所述换能器可在器械手持件中由一个或多个压电或者磁阻元件构成。 Surgical end effector, for example, to induce ultrasonic vibrations excited by an electrical transducer, the transducer may be constituted by one or more piezoelectric or magneto-resistive elements in the instrument handpiece. 由换能器产生的振动通过从换能器部分延伸到手术端部执行器的超声导传递到手术端部执行器上。 Vibrations generated by the ultrasonic transducer on the surgical guide end is transmitted to the surgical end effector by extending from the transducer portion.

现有技术中已知很多这种超声外科器械。 Many such known in prior art ultrasonic surgical instrument. 但是,它们对由外科医生施加的压力高度敏感。 However, they are highly sensitive to the pressure exerted by the surgeon. 具体地说,当外科医生施加更大的压力时,改变了超声器械的振动特性。 Specifically, when the surgeon to exert greater pressure, the vibration characteristics changed ultrasonic instrument. 实际上,在其中外科医生施加超出预定的压力水平的情况下,传递到组织上的能量可能太高。 Indeed, in the case where the surgeon is applied exceeds a predetermined pressure level, the energy delivered to the tissue may be too high. 这可能导致不希望的组织效应,例如所作用的脉管的止血不良。 This may lead to unwanted tissue effects, such as adverse hemostatic effect of the vessel. 另外,外科器械可能不能满足用于在高压力水平下产生的振动水平的材料压力要求,从而导致不理想的器械操作。 Further, the surgical instrument may not meet the level of the material for the pressure oscillations generated at a high pressure level required, resulting in undesirable operation of the instrument. 已经试图例如通过在致动组件内加入弹簧 Attempts have been made, for example, by adding a spring in the actuation assembly

3来试图机械地控制所施加的压力,从而弥补与施加不同的压力相关联的问题。 3 attempt to mechanically control a pressure applied, the problem associated with the different pressures applied to make up. 但是,这些试图仅获得了有限的成功。 However, these attempts to obtain only limited success.

这样,需要一种装置,其中能实现恒定的功率分布,与由外科医生施加的作用力的个人喜好无关。 Thus, a need for an apparatus which can achieve a constant power distribution, regardless of personal preference by the surgeon applied force. 本发明提供了这种装置。 The present invention provides such apparatus.

发明内容 SUMMARY

因此本发明的一个目的是提供一种与超声外科器械联用的控制系统。 It is therefore an object of the present invention is to provide an ultrasonic surgical instrument coupled with a control system. 该控制系统包括向超声外科器械供应电能的发生器,以如下方式控制由发生器供应的电能,即, 一旦达到预定的压力阈值,将由器才成施加的功率保持恒定。 The control system includes supplying electrical energy to an ultrasonic surgical instrument generator, in such a manner controls the power supplied by the generator, i.e., once a predetermined pressure threshold is reached only by an applied power to remain constant.

本发明的另一个目的在于提供一种超声外科系统。 Another object of the present invention is to provide an ultrasonic surgical system. 该超声外科系统包括一器械和用于向器械供应所需信号的与器械相连的超声信号发生器。 The ultrasonic surgical instrument and an ultrasound system includes a signal generator for a desired signal supplied to the instrument connected to the instrument. 该器械包括超声换能器、壳体和端部执行器。 The instrument includes an ultrasonic transducer, a housing and an end effector. 该超声信号发生器包括一控制系统。 The ultrasonic signal generator includes a control system. 该控制系统包括给器械供应电能的发生器,以如下方式控制由发生器供应的电能,即, 一旦达到预定的压力阈值,将由器械施加的功率保持恒定。 The control system includes a generator supplying electrical energy to the instrument, in a manner that controls the power supplied by the generator, i.e., once a predetermined pressure threshold is reached, the power applied by the instrument is maintained constant.

本发明的再一个目的在于提供一种用于控制超声外科器械的功率施加的方法。 A further object of the present invention is to provide a method for controlling power applied to the ultrasonic surgical instrument. 通过分配额定功率实现该方法,超声器械在该额定功率下操作并且调节施加到超声外科器械上的电流和电压,以便将由超声器械施加的功率保持基本上处于额定功率。 Rated power allocated by implementing the method, ultrasonic instrument operating at rated power and adjusting the current and voltage applied to the ultrasonic surgical instrument, the power applied by the ultrasonic instrument in order to maintain substantially at nominal power.

(1 )本发明涉及一种用于与超声外科器械一起使用的控制系统, (1) The present invention relates to a control system for use with an ultrasonic surgical instrument,

包括: include:

向超声外科器械供应电能的发生器,由该发生器供应的电能受到如此的控制,即, 一旦达到预定的压力阈值,就将由器械施加的功率保持恒定。 Supplying electrical energy to the ultrasonic surgical instrument generator, the electrical energy supplied by the generator being controlled such, i.e. power, once a predetermined pressure threshold is reached, the instrument will be applied is kept constant.

(2) 如项目(l)所述的控制系统,其中,由器械施加的功率等于由发生器产生的电流和电压的乘积。 The control system (2) according to Item (l), wherein the product of current and voltage applied by the instrument is equal to the power generated by the generator.

(3) 如项目(2)所述的控制系统,还包括用于测量通过超声外科器械的阻抗并基于所测量到的阻抗控制功率水平的装置。 (3) The control system according to Item (2) above, further comprising means for measuring the impedance measured by the impedance controlling the power level of the ultrasonic surgical instrument based. (4) 如项目(3)所述的控制系统,其中,控制功率水平包括根据所测得的阻抗调整通过超声外科器械的电流。 The control system (4) Item (3), wherein controlling the power level comprises adjusting the impedance of the measured current through an ultrasonic surgical instrument.

(5) 如项目(l)所速的控制系统,其中,由所速发生器供应的电压随施加的力的连续增加而增大。 (5) If the item (l) of the speed control system, wherein the continuous increase in the voltage supplied by the generator speed with applied force increases.

(6) 如项目(l)所述的控制系统,还包括用于测量通过超声外科器械的阻抗并基于所测量到的阻抗控制功率水平的装置。 The control system (6) as item (l), further comprising means for measuring the impedance through the ultrasonic surgical instrument and a device power level based on the measured impedance control.

(7) 如项目(6)所述的控制系统,其中,控制功率水平包括根据所测得的阻抗调整通过超声外科器械的电流。 The control system (7) as item (6), wherein the controlling the power level comprises adjusting the impedance of the measured current through an ultrasonic surgical instrument.

(8) 如项目(l)所述的控制系统,还包括用由超声外科器械施加的压力平衡该超声外科器械的震动水平的装置。 The control system (8) as item (l), further comprising a means of vibration levels of the ultrasonic surgical instrument with pressure applied by the ultrasonic surgical instrument balance.

(9) 本发明还涉及一种超声外科系统,包括:一器械和与该器械连接、用于给该器械提供所需信号的超声信号 (9) The present invention further relates to an ultrasonic surgical system, comprising: a device connected to the instrument and to provide an ultrasonic signal of the desired signal to the instrument

发生器,所述器械包括超声换能器,壳体和端部执行器; Generator, the instrument comprises an ultrasonic transducer, a housing and an end effector;

所述超声信号发生器包括控制系统,该控制系统包括向所述器械供应电能的发生器,由该发生器供应的电能受到如此的控制,即,一旦达到预定的压力阈值,就将由器械施加的功率保持恒定。 The ultrasonic signal generator includes a control system, the control system includes a generator supplying electrical energy to the instrument, the electrical energy supplied by the generator being controlled such that, once a predetermined pressure threshold is reached, the instrument will be applied power remains constant.

(10) 如项目(9)所述的超声外科系统,其中,由所述器械施加的功率等于由发生器产生的电流和电压的乘积。 (10) The item (9) of the ultrasonic surgical system, wherein the power applied by the instrument is equal to the product of current and voltage generated by the generator.

(11) 如项目(10)所述的超声外科系统,还包括用于测量通过所述器械的阻抗并基于所测量到的阻抗控制功率水平的装置。 (11) The item (10) of the ultrasonic surgical system, further comprising a device for measuring the impedance of said apparatus and a power level based on the measured impedance control.

(12) 如项目(11 )所述的超声外科系统,其中,控制功率水平包括根据所测得的阻抗调整通过所述器械的电流。 (12) The item (11) of the ultrasonic surgical system, wherein the power level comprises controlling current through the instrument according to the measured impedance adjustment.

(13) 如项目(9)所述的超声外科系统,其中,由所述发生器供应的电压随施加的力的连续增加而增大。 (13) The item (9) of the ultrasonic surgical system, wherein the continuous increase in the voltage supplied by the generator, with applied force increases.

(14) 如项目(9)所述的超声外科系统,还包括用于测量通过所述器械的阻抗并基于所测量到的阻抗控制功率水平的装置。 (14) The item (9) of the ultrasonic surgical system, further comprising means for measuring the impedance of said instrument and controlling the power level based on the measured impedance.

(15) 如项目(14)所述的超声外科系统,其中,控制功率水平包括根据所测得的阻抗调整通过所述器械的电流。 The ultrasonic surgical system (15) according to Item (14), wherein controlling the power level comprises a current through the instrument according to the measured impedance adjustment.

(16) 如项目(9)所述的超声外科系统,还包括用由所述器械施加的压力平衡该器械的震动水平的装置。 (16) The item (9) of the ultrasonic surgical system, further comprising means for balancing vibration levels of the instrument with pressure applied by the instrument.

(17) 本发明进一步涉及一种用于控制由超声外科器械施加的功率的方法,包括以下步骤: (17) The present invention further relates to a method for controlling the power applied by the ultrasonic surgical instrument, comprising the steps of:

分配超声器械操作时的额定功率; Dispensing ultrasonic instrument rated power operation;

调节施加给超声外科器械的电流和电压,以便将由超声外科器械施加的功率保持基本上处于额定功率。 Adjusting the current and voltage applied to the ultrasonic surgical instrument, substantially in order to maintain the rated power by the ultrasonic power applied to the surgical instrument.

(18) 如项目(17)所述的方法,其中,调节步骤包括测量通过所述超声外科器械的阻抗并基于所测量到的阻抗控制功率水平。 The method according to (18) as item (17), wherein the adjusting step comprises measuring the impedance through the ultrasonic surgical instrument and controlling impedance based on the measured power level.

U9)如项目(18)所述的方法,其中,控制功率水平包括根据所测得的阻抗调整通过所述超声外科器械的电流。 The method according to U9) as item (18), wherein controlling the power level comprises an ultrasonic surgical instrument according to the current through the measured impedance adjustment.

(20) 如项目(17)所述的方法,其中,由所述发生器供应的电压随施加的力的连续增加而增大。 (20) The method according to item (17), wherein the continuous increase in the voltage supplied by the generator, with applied force increases.

(21) 如项目(17)所述的方法,其中,调节步骤包括用由所述超声外科器械施加的压力平衡该超声外科器械的震动水平。 The method according to (21) as item (17), wherein the adjusting step comprises a pressure applied by the ultrasonic surgical instrument balancing vibration levels of the ultrasonic surgical instrument.

可通过下面的详细说明并结合附图清楚地了解本发明的其它目的和优点,下面的说明中描述了本发明的几个实施例。 By the following detailed description in conjunction with the accompanying drawings clearly understand other objects and advantages of the present invention are described in the following description of several embodiments of the present invention.

附图说明 BRIEF DESCRIPTION

图l是根据本发明的系统的视图。 Figure l is a view of the system according to the invention.

图2是示出了根据本发明的电流、电压和功率分布的曲线图。 FIG 2 is a graph illustrating a current, voltage and power distribution of the present invention. 图3是根据本发明的用于控制施加到超声器械上的功率水平的优选方案的流程图。 FIG 3 is a flowchart of a preferred embodiment of the power level applied to an ultrasonic instrument according to the present invention controls.

具体实施方式 Detailed ways

下面将披露本发明的详细实施例。 It will now be disclosed in detail to embodiments of the present invention. 但是应当理解,所披露的实施例仅是本发明的例证,本发明可以各种形式实现。 It should be understood that the disclosed embodiments are merely exemplary of the present invention, the present invention can be implemented in various forms. 因此,此处披露的细节不应解释为限制,而是仅作为权利要求的基础以及作为用于告知 Therefore, the details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a to inform

本领域技术人员如何制造和/或使用本发明的基础。 Skilled in the art how to manufacture and / or use the invention.

参照图l,披露了与超声手术夹钳和切割器械12联用的超声系统 Referring to FIG. L, with the ultrasound system is disclosed ultrasonic surgical clamp and associated with the cutting instrument 12

610。 610. 根据本发明的一个优选实施例,超声系统10包括超声信号发生器15,该信号发生器15适于施加足以在手术期间将功率保持基本上恒定的电流和电压。 Embodiment, the ultrasound system in accordance with a preferred embodiment of the present invention 10 includes an ultrasonic signal generator 15, the signal generator 15 adapted to apply sufficient power during the operation to maintain substantially constant current and voltage.

根据本发明的一个优选实施例,该系统适于与超声器械12联用,该超声器械12与在名称为"Force limiting mechanism for an ultrasonicsurgical instrument"的美国专利No.6,458,142中披露的器械类似,将该美国专利在此引入作为参考,但是鉴于本发明使用电流和电压来控制由器械施加的功率,本发明不需要该器械的这种力限制机构。 According to a preferred embodiment of the present invention, the system is adapted and combined with the ultrasonic instrument 12, and the ultrasonic instrument 12 is "Force limiting mechanism for an ultrasonicsurgical instrument" disclosed in U.S. Patent No.6,458,142 in the name similar devices, the U.S. Patent incorporated by reference herein, but in view of the present invention using a current and voltage controls the power applied by the instrument, the present invention does not require such a force limiting mechanism of the instrument. 尽管根据本发明披露了一种优选的器械,但是本领域技术人员清楚地了解,本发明提供了适于与广泛的各种装置联用的系统。 While a preferred instrument is disclosed in accordance with the present invention, those skilled in the art will clearly understand, the present invention provides apparatus suitable for use with a wide variety of systems associated with.

为了披露本发明,器械12包括夹层型超声换能器82、手持件壳体20和夹钳凝固器120。 In order to disclose the invention, the instrument 12 includes sandwich type ultrasonic transducer 82, a handpiece housing 20 and a clamp coagulator 120. 该夹钳凝固器120用于开放手术或者腹腔镜手术。 The clamp coagulator 120 is used for open surgery or laparoscopic surgery. 称为"兰杰文堆,,的超声换能器82通常包括转换部分90、第一谐振器或端部钟形件形件(endbell) 92、第二谐振器或者前部钟形件(forebell) 94以及辅助部件。升学组件80包括超声换能器82、支座36、速度变换器64和表面95。 Called "Langevin stack ,, ultrasonic transducer 82 generally comprises a conversion section 90, a first resonator or end bell-shaped member (endbell) 92, a second resonator or the front portion of the bell member (forebell ) 94 and an auxiliary member. enrollment assembly 80 includes an ultrasonic transducer 82, mount 36, velocity transformer 64 and surface 95.

端部钟形件形件92的远端连接到转换部分90的近端上,并且前部钟形件94的近端连接到转换部分90的远端上。 The distal end portion of the bell-shaped member 92 is connected to the proximal end of the conversion section 90, and the proximal end portion of the front of the bell 94 is connected to the distal portion 90 of the conversion. 前部钟形件94和端部钟形件92具有由多种因素确定的长度,这些因素包括转换部分90的厚度、用于制造端部钟形件92和前部钟形件94的材料的密度和弹性模量以及超声换能器82的谐振频率。 The front portion of the bell 94 and the end bell 92 has a length determined by a number of factors, These include conversion thickness portion 90, the material used for manufacturing the end portion of the bell 92 and the front portion of the bell 94 density and modulus of elasticity and the resonance frequency of the ultrasonic transducer 82. 前部钟形件94可以从其近端到其远端向内变细,以随着速度变换器(未示出)增大超声振幅,或者没有振幅增大。 The front portion of the bell 94 can be tapered inwardly from its proximal end to its distal end, as to the speed converter (not shown) ultrasonic amplitude is increased, or no amplitude increases.

压电元件IOO优选由适当的材料制成,例如锆钛酸铅、偏铌酸铅或者其它压电晶体材料。 IOO piezoelectric element is preferably made of a suitable material such as lead zirconate titanate, lead metaniobate, or other piezoelectric crystal material. 正电极96、负电极98和压电元件每个都具有穿过其中心延伸的孔。 The positive electrode 96, negative electrode 98 and the piezoelectric elements each having a central aperture extending therethrough. 正、负电极96、 98分别电连接到第一和第二导线102、 104上。 Positive and negative electrodes 96, 98 are electrically connected to the first and second wires 102, 104. 第一和第二导线102、 104装入电缆25中并可电连接到超声系统IO的超声信号发生器上。 First and second leads 102, 104 can be electrically charged cable 25 is connected to the ultrasound system ultrasound signal generator IO.

实际上,声学组件80的超声换能器82将来自超声信号发生器的电信号转换成机械能,该机械能导致超声换能器82和端部执行器180 以超声频率基本上沿纵向振动。 Indeed electrical signal, the acoustic assembly 80 of the ultrasonic transducer 82 from the ultrasonic signal generator into mechanical energy, which can cause mechanical ultrasonic transducer 82 and the end effector 180 at ultrasonic frequencies substantially along a longitudinal vibration. 当给声学组件供电时,通过声学组件80产生振动驻波。 When the acoustic assembly to a power supply, a standing wave vibration is generated through the acoustic assembly 80. 在沿着声学组件80的任何位置的振动振幅取决于沿着声学组件80的振动被测量的位置。 In any vibrational amplitude depending on the position along the acoustic assembly 80 of the acoustic vibrations are measured along the assembly 80 positions.

第一和第二导线102、 104将电信号从超声信号发生器15传递到正电极96和负电极98上。 First and second conductors 102, 104 on the electric signal to the ultrasonic signal generator 15 is transmitted from the positive electrode 96 and negative electrode 98. 可获得适合的发生器,如辛辛那提的伊西康内外科公司的型号GEN01的发生器。 Available suitable generator, such as Cincinnati company within Yixi Kang surgical model GEN01 generator. 压电元件100由来自超声信号发生器的响应于脚踏开关118的电信号供电,以在声学组件80中产生声学驻波。 The piezoelectric element 100 from the ultrasonic signal generator in response to an electrical signal power foot switch 118 to an acoustic standing wave in the acoustic assembly 80 is generated. 电信号在压电元件100中形成干扰,其形式为在材料中导致大压力的重复位移。 Interfere with the electrical signal in the piezoelectric element 100 in the form of repeated displacements resulting in large stress in the material. 该重复的小位移使得压电元件100以连续的方式沿着压力梯度扩张和收缩,从而产生超声能量的纵波。 The repeated small displacements such that the piezoelectric element 100 in a continuous manner along the expansion and contraction of the pressure gradient, producing longitudinal waves of ultrasonic energy. 超声能量通过声学组件80传递到端部执行器180上。 Transmitting ultrasonic energy through the acoustic assembly 80 to the end effector 180.

为了使声学组件80将能量传递到端部执行器180上,声学组件80的所有部件必须声学地连接到夹钳凝固器120的超声活性部分上。 In order for the acoustic assembly 80 to deliver energy to the end effector 180, all components of acoustic assembly 80 must be acoustically coupled to the active portion of the ultrasonic clamp coagulator 120. 超声换能器82的远端可在第一表面通过螺紋连接件(例如短柱50) 声学地连接到超声波导的近端上。 The distal end of the ultrasound transducer 82 may be (e.g., studs 50) acoustically coupled to the proximal end of the ultrasonic waveguide by a threaded connection on a first surface of the member. 声学组件80的部件优选可声学地调谐,从而任何组件的长度是半波长的整数倍,其中波长拉姆达是预选的或者声学组件80的操作纵向振动驱动频率的波长,其中N是任意正整数。 Acoustic assembly member 80 is preferably acoustically tuned such that the length of any assembly is an integral multiple of a half wavelength, where the wavelength lambda is the wavelength of a preselected or operating longitudinal vibration of the acoustic assembly 80 of the drive frequency, where N is any positive integer . 在不背离本发明的精神的情况下,也可以设想声学组件80 可以采用声学元件的任何合适的布置。 Without departing from the spirit of the present invention is also contemplated the acoustic assembly 80 by any suitable arrangement of acoustic elements may be employed.

为了适应由不同外科医生采用的不同的力分布,本发明控制由超声外科发生器15施加到器械12上的功率。 To accommodate different forces employed by the different distribution of the surgeon, the present invention is controlled by the ultrasonic surgical generator 15 is applied to power the instrument 12. 如此控制所施加的额定功率,即防止被夹钳和/或切割的组织产生不希望的效果。 Thus controlled rated power applied, i.e., prevent the clamping and / or cutting tissue undesirable effects. 通过根据本发明控制功率,消除了在现有技术的超声器械中对机械控制系统的需要,并且向用户提供了改善的反馈。 By controlling the power according to the present invention, it eliminates the need for mechanical control systems in prior art ultrasonic instruments, and provide improved feedback to the user. 最后,通过超声器械12施加的功率受到在组织和端部执行器180之间产生的摩擦、端部执行器的速度和由端部执行器180施加的法向力的影响。 Finally, power is applied through the ultrasonic instrument 12 by friction between the tissue and the end effector 180 is generated, the impact speed of an end effector and a method applied by the end effector 180 to force. 实际上,在组织和端部执行器180之间的摩擦通常非常恒定不变,仅由于组织的干燥度而具有微小的变化。 In fact, the friction between the tissue and the end effector 180 is generally constant, since only the degree of drying tissue has a small variation. 因此在功率施加中的变量是端部执行器的速度和所施 Thus in the variable speed power is applied to the end effector and the applied

8加的法向力。 8 plus the force of law.

如将在下面详细描述的一样,本发明通过基于所测量的通过换能 As will be described in detail as below, by the present invention is based on the measured by the transducer

器的阻抗来控制超声外科器械12的电压和电流,从而将输入功率保持基本上恒定,所述阻抗与所需的恒定功率水平有关。 Resistor to control the voltage and current of the ultrasonic surgical instrument 12 to remain substantially constant input power, the impedance is desired constant power levels. 具体地说,参照图2所示的功率分布图,在达到预定的压力水平之后由超声外科器械12施加的功率保持恒定。 Specifically, power distribution as shown in FIG 2 Referring to FIG kept constant power applied by the ultrasonic surgical instrument 12 after reaching a predetermined pressure level. 通过连续地监控与由操作者施加的作用力有关的通过换能器82的阻抗,并且通过调节与端部执行器180的速度有关的通过其中的电流,将额定功率保持在所需的水平,本发明能够对组织提供一致的功率施加,而与操作者施加的作用力无关。 By continuously monitoring the impedance associated with the force applied by the operator through the transducer 82, and a current therethrough, the nominal power is maintained at a desired level related by adjusting the speed of the end effector 180, the present invention is capable of providing uniform power applied to tissue, the force applied by the operator independent.

由超声外科器械12所产生的功率是超声外科器械所采用的由超声外科发生器15提供的电压和电流的乘积。 Power by an ultrasonic surgical instrument 12 is generated by the product of the voltage and current of the ultrasonic surgical generator 15 of the ultrasonic surgical instrument used. 如图2所示,在由外科医生施加的作用力水平低于400g时,超声外科发生器15设计用于通过将输入电流保持给换能器而在超声器械12的端部执行器180处保持某个固定的振动速度。 2, when the horizontal force exerted by the surgeon is less than 400g, the ultrasonic surgical generator 15 is designed for a transducer of the ultrasonic instrument is held in the end effector 12 by an input current 180 remains a fixed vibration speed. 同样,由超声外科器械12的超声外科发生器15施加的电压随着由外科医生施加的作用力继续增加而成比例地增加,从而保持固定的电流。 Similarly, the voltage 15 applied by the ultrasonic surgical generator 12 of the ultrasonic surgical instrument with a force applied by the surgeon continues to increase proportionally increased to maintain constant current. 因此,直到图2中400g的点,功率连续增加。 Thus, until the point in 400g of FIG. 2, the power is continuously increased. 超过400g的点时,超声外科发生器15被设计用于转换到这样一种模式,其中它将某一固定的功率保持到手术刀上,并由此保持到目标组织上,与操作者施加的作用力无关。 When more than 400g point, the ultrasonic surgical generator 15 is designed for switching to a mode in which it held a fixed power to the scalpel, and to thereby maintain a target tissue, applied to the operator's independent of the force. 在这种模式中,当由外科医生施加的作用力增加时,电压以使电流减小的这样一种比例增加,但是功率保持同样的水平。 In this mode, when increasing the force applied by the surgeon, so that a voltage proportional to the increase in current is reduced, but the power to maintain the same level.

由于电压增加的比例的变化所产生的电流减小导致流过超声外科器械12的换能器82的电流减小,并由此导致超声器械12的端部执行器180的振动速度减小。 Since the current change rate of the voltage increase due to the decrease of the generated flowing through the ultrasonic surgical instrument 12 of the current transducer 82 is reduced, thereby causing the vibration speed and the ultrasonic instrument 12 of the end effector 180 is reduced. 相比于现有技术的装置,电压不是以将电流并因此将振动保持在恒定的水平的方式增加。 Compared to the prior art devices, the voltage is not increased in the current manner and thus will be kept at a constant vibration level. 而电压相对于电流以这样的方式增加,即将通过超声外科器械12的超声换能器82提供的功率保持在恒定水平。 And the voltage with respect to current in such a way to increase the power coming through the ultrasonic surgical instrument 12 of the ultrasonic transducer 82 provided at a constant level. 通过考虑所施加的作用力控制电压和电流, 来实现用于保持恒定功率的机构,以便保持恒定的额定功率。 It applied force by taking into account the control voltage and current to achieve constant power means for holding, in order to maintain a constant nominal power. 通过将功率保持在恒定水平,不管所施加的作用力,通过控制通过超声外科 By maintaining power at a constant level, regardless of the applied force, by controlling the ultrasonic surgical by

9器械12的电压和电流,本发明的超声外科器械12将施加恒定的功率, 而与外科医生所施加的压力无关。 9 the voltage and current instrument 12, an ultrasonic surgical instrument 12 according to the present invention is applied to constant power regardless of the pressure applied by the surgeon.

同样,如上面描述的一样,根据本发明恒定功率的施加用由端布执行器180所施加的法向压力平衡端部执行器180的振动(或速度) 水平。 Also, as described above, as a method by an end effector cloth 180 applied to the pressure equalization end vibration (or velocity) of the constant power level in accordance with the present invention is applied 180. 例如,当外科医生通过端部执行器180施加更大的法向作用力时,振动水平减小,并且所施加的功率水平保持恒定。 For example, when the surgeon through the end effector 180 to exert a greater normal force when the vibration level is reduced, kept constant and the applied power level. 如本领域技术人员将理解的那样,参照图2中的曲线, 一段倾斜上升对于利用与超声外科器械12联用的本发明是必须的。 As those skilled in the art will appreciate, in reference to graph 2, the ramp up section for use with the present invention in combination with an ultrasonic surgical instrument 12 is necessary. 如图2所示,当压力从零增加到400克力时倾斜上升发生。 As shown in FIG 2, when the pressure is ramped up from zero to 400 grams force occurs. 在这段时间,当由外科医生施加的作用力增加时,电流保持恒定,而电压增加,以补偿振动和电流减小的趋势。 During this time, when increasing the force applied by the surgeon, the current is kept constant while the voltage increases to compensate for the tendency of vibration and a reduced current.

一旦达到400g的作用力,调节电压和电流,以将功率保持在恒定水平。 Once the force reaches 400g, voltage regulation and current to power at a constant level. 如本领域技术人员将理解的那样,功率保持恒定,在根据本发明使用的作用力特性范围内。 As those skilled in the art will appreciate, the power remains constant, within the scope of the present invention the biasing force characteristics in accordance with. 施加的作用力超过预定的极限将导致装置故障,将警告外科医生已经到达了不可接受的作用力水平。 Applied force exceeds a predetermined limit will cause the device to malfunction, will alert the surgeon has reached an unacceptable level of force.

更具体地说,参照附图3,披露了表示一个优选操作过程的流程图。 More specifically, referring to Figure 3, a flowchart showing a procedure is disclosed in the preferred operation. 根据本发明,超声外科器械12和超声外科发生器15启动。 According to the present invention, the ultrasonic surgical instrument 12 and the ultrasonic surgical generator 15 starts. 超声外科发生器15通过其操作处理器从置于超声器械12中的存储装置读取额定驱动设定值。 The ultrasonic surgical generator 15 reads the nominal drive set value from the storage device 12 is placed in the operation of the processor through which the ultrasonic instrument. 具体地说,读取下列设定值:无负载时的驱动电 Specifically, the set value is read following: no-load driving

流(即,额定电流I,)和调节成承受负载的额定功率(P,)(即, 该器械设计用于根据本发明操作的预定功率)。 Stream (i.e., the rated current of the I,) and adjusted to withstand the load of rated power (P,) (i.e., the instrument is designed for power in accordance with a predetermined operation of the present invention).

之后,由操作者确定是否要求器械激活。 Thereafter, if the requirements determined by the operator to activate the device. 如果答案是NO,器械12返回到等待激活要求的激活要求状态。 If the answer is NO, the instrument 12 returns to activation requires activation request waiting state. 如果操作者要求激活器械, If the operator is required to activate the device,

进行扫频,以定位器械12的谐振频率和试图以额定电流(In。m)驱动 Frequency sweep to locate a resonance frequency of the device 12 and trying to nominal current (In.m) drive

器械。 instrument. 超声外科发生器15然后确定是否定位谐振频率,以及器械是否能够在额定电流(In。m)下驱动。 The ultrasonic surgical generator 15 then determines whether the resonance frequency is positioned, and whether the device can be driven at a rated current (In.m). 如果超声外科发生器15不能定位谐振频率或者在额定电流(In。m)下驱动手术刀,显示错误并且超声 If the ultrasonic surgical generator 15 can not locate the resonance frequency or drive the scalpel at nominal current (In.m), and the ultrasound error

外科发生器15关闭。 The surgical generator 15 off. 如果定位谐振频率并且器械在额定电流(In。m) 下操作,计算出谐振频率时的手术刀阻抗(Zr),这是通过如下公式实现的: If the resonance frequency of the positioning and operation of the instrument at nominal current (In.m), calculates the scalpel impedance (Zr) at the resonance frequency, which is achieved by the following formula:

Z产V + I Z yield V + I

其中,I-驱动电流(初始为In。m),以及V-实3见驱动电流所需的驱动电压。 Wherein, I- driving current (initially In.m), V- and 3 see the real driving voltage required to drive current.

该系统然后确定计算为I2xZr的功率是否大于调节承受负载的 The system then determines whether the calculated power is larger than the adjustment I2xZr load bearing

额定功率(Pn。m)。 Rated power (Pn.m). 如果确定调节承受负载的额定功率(Pn。m)小于 If the rated power adjustment is determined load bearing (Pn.m) less than

12xZr, i人为器械施加的功率过高,并且通过将驱动电流减小成I=SQRT ( Pnom/Zr)而将器械的功率减小程额定功率(P匪)。 12xZr, the power applied to the device i artificially high, and the drive current reduced to I = SQRT (Pnom / Zr) and the rated power of the device is reduced drive power (P bandit). 如本领域技术人员理解的那样,通过改变驱动电压调节驱动电流。 As those skilled in the art will appreciate, the drive current is adjusted by varying the drive voltage.

之后,超生外科发生器15确定是否能够将锁定保持在谐振频率, 并且在所需的电流下驱动。 Thereafter, the bounce surgical generator 15 determines whether the lock can be maintained at the resonance frequency, and at the required drive current. 如果回答是NO,显示错误并且程序中止。 If the answer is NO, the program displays an error and abort. 如果超声外科发生器能将锁定保持在谐振频率并且在所需的电流下驱动,超生外科发生器15检查看看是否检测到停用要求,如杲没有检测到停用要求,超声外科发生器15回到在谐振频率下计算手术刀阻抗(Zr)的步骤。 If the ultrasonic surgical generator is able to lock the holder at the resonance frequency and drive at the desired current, bounce surgical generator 15 checks to see whether the detected deactivation request is not detected as Gao claim deactivated, the ultrasonic surgical generator 15 Back to the step of calculating the scalpel impedance (Zr) at the resonance frequency.

如果额定功率(Pn。m)大于I、Zr,保持额定驱动电流(In。m), 并且系统确定是否能够将锁定保持在谐振频率,并且在所需的电流下 If the rated power (Pn.m) is greater than I, Zr, maintain the rated drive current (In.m), and the system determines whether the lock held at the resonance frequency, and the required current

驱动。 drive. 如果回答是NO,显示错误并且程序中止。 If the answer is NO, the program displays an error and abort. 如果回答是YES, 超生外科发生器15确定是否检测到停用要求,如果没有检测到,超声外科发生器15回到在谐振频率下计算手术刀阻抗(Zr)的步骤。 If the answer is YES, bounce surgical generator 15 determines whether the detected deactivation request. If not detected, the ultrasonic surgical generator 15 returns to step scalpel calculated impedance at the resonance frequency (Zr) a.

在外科手术期间连续重复该过程,以保持额定所需功率水平,并且操作根据本发明的系统。 Continuously repeated during the surgical procedure to maintain a nominal desired power level, and the operating system according to the invention. 通过连续地监控与操作者施加的作用力有关的通过换能器82的阻抗,将额定功率保持在所需的水平,本发明能够提供一致的功率施加,而与操作者施加的作用力无关。 Transducer impedance by about 82 by the biasing force of the operator continuously monitors the applied nominal power is maintained at the desired level, the present invention can provide a consistent application of power, while a force applied by the operator independent.

尽管已经示出和描述了优选的实施例,应当理解,并不意图通过这些实施例来限制本发明,而是旨在覆盖落入本发明的精神和范围内的所有变型和可选择的结构。 While there have been shown and described preferred embodiments, it should be understood that the present invention is not intended to be limited by these embodiments, but is intended to cover all modifications within the spirit and scope of the invention and alternative structures.

Claims (6)

1. 一种用于与超声外科器械(12)一起使用的控制系统,包括:用于测量通过超声外科器械的阻抗并基于所测量到的阻抗控制功率水平的装置,向超声外科器械供应电能的发生器(15),由该发生器供应的电能受到如此的控制,即,一旦所测量到的阻抗达到预定的阻抗阈值,就将由器械施加的功率保持恒定在预定的水平;其特征为,所述发生器(15)能够从置于超声器械(12)中的存储装置中读取预定的功率水平。 1. A control system for use with an ultrasonic surgical instrument (12), comprising: means for measuring the power level and based on the impedance measured by the impedance controlling an ultrasonic surgical instrument, the supply of electrical energy to an ultrasonic surgical instrument generator (15), the electrical energy supplied by the generator is so controlled that, once the measured impedance reaches a predetermined impedance threshold, the power to be applied by the instrument is kept constant at a predetermined level; characterized in that said generator (15) can be read from a predetermined power level set in an ultrasonic instrument (12) in the storage device.
2. 如权利要求1所述的控制系统,其特征为,由器械施加的功率等于由发生器产生的电流和电压的乘积。 2. The control system according to claim 1, characterized in that the power applied by the instrument is equal to the product of the current and voltage generated by the generator.
3. 如权利要求1或2所述的控制系统,其特征为,控制功率水平包括根据所测得的阻抗调整通过超声外科器械的电流。 Control system according to claim 12, wherein controlling the power level comprises adjusting the impedance of the measured current through an ultrasonic surgical instrument.
4. 如权利要求1所述的控制系统,其特征为,由所述发生器供应的电压随施加的阻抗的连续增加而增大。 The control system as claimed in claim 1, characterized by a continuously increasing function of the voltage applied to said generator supplying an impedance increases.
5. 如权利要求1所述的控制系统,还包括用由超声外科器械施加的压力平衡该超声外科器械的震动水平的装置。 5. The control system according to claim 1, further comprising means for balancing vibration levels of the ultrasonic surgical instrument with pressure applied by the ultrasonic surgical instrument.
6. 如权利要求1或2所述的控制系统,所述发生器(15 )还能够从被置入的存储装置中读取在零阻抗的期望的驱动电流。 6. The control system according to claim 1, said generator (15) can also read a desired drive current zero impedance from the storage device is placed.
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